Camera optical lens comprising seven lenses of ++--++- refractive powers

ABSTRACT

The present disclosure relates to the field of optical lenses and provides a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens made of a glass material; a second lens made of a plastic material; a third lens made of a plastic material; a fourth lens made of a glass material; a fifth lens made of a plastic material; a sixth lens made of a plastic material; and a seventh lens made of a plastic material. The camera optical lens satisfies following conditions: 1.51 f1/f 2.50; 1.70 n1 2.20; −10.00 (R13+R14)/(R13−R14) 10.00; and 1.70 n4 2.20. The camera optical lens can achieve a high imaging performance while obtaining a low TTL.

TECHNICAL FIELD

The present disclosure relates to the field of optical lens, and moreparticularly, to a camera optical lens suitable for handheld terminaldevices, such as smart phones or digital cameras, and imaging devices,such as monitors or PC lenses.

BACKGROUND

With the emergence of smart phones in recent years, the demand forminiature camera lens is increasing day by day, but in general thephotosensitive devices of camera lens are nothing more than ChargeCoupled Device (CCD) or Complementary Metal-Oxide Semiconductor Sensor(CMOS sensor), and as the progress of the semiconductor manufacturingtechnology makes the pixel size of the photosensitive devices becomesmaller, plus the current development trend of electronic productstowards better functions and thinner and smaller dimensions, miniaturecamera lenses with good imaging quality therefore have become amainstream in the market. In order to obtain better imaging quality, thelens that is traditionally equipped in mobile phone cameras adopts athree-piece or four-piece lens structure. Also, with the development oftechnology and the increase of the diverse demands of users, and as thepixel area of photosensitive devices is becoming smaller and smaller andthe requirement of the system on the imaging quality is improvingconstantly, the five-piece, six-piece and seven-piece lens structuresgradually appear in lens designs. There is an urgent need forultra-thin, wide-angle camera lenses with good optical characteristicsand fully corrected chromatic aberration.

BRIEF DESCRIPTION OF DRAWINGS

Many aspects of the exemplary embodiment can be better understood withreference to the following drawings. The components in the drawings arenot necessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the present disclosure. Moreover,in the drawings, like reference numerals designate corresponding partsthroughout the several views.

FIG. 1 is a schematic diagram of a structure of a camera optical lens inaccordance with Embodiment 1 of the present disclosure;

FIG. 2 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 1;

FIG. 3 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 1;

FIG. 4 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a structure of a camera optical lens inaccordance with Embodiment 2 of the present disclosure;

FIG. 6 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 5;

FIG. 7 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 5;

FIG. 8 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 5;

FIG. 9 is a schematic diagram of a structure of a camera optical lens inaccordance with Embodiment 3 of the present disclosure;

FIG. 10 is a schematic diagram of a longitudinal aberration of thecamera optical lens shown in FIG. 9;

FIG. 11 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 9; and

FIG. 12 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 9.

DESCRIPTION OF EMBODIMENTS

The present disclosure will hereinafter be described in detail withreference to several exemplary embodiments. To make the technicalproblems to be solved, technical solutions and beneficial effects of thepresent disclosure more apparent, the present disclosure is described infurther detail together with the figure and the embodiments. It shouldbe understood the specific embodiments described hereby is only toexplain the disclosure, not intended to limit the disclosure.

Embodiment 1

Referring to FIG. 1, the present disclosure provides a camera opticallens 10. FIG. 1 shows the camera optical lens 10 according to Embodiment1 of the present disclosure. The camera optical lens 10 includes 7lenses. Specifically, the camera optical lens 10 includes, from anobject side to an image side, an aperture S1, a first lens L1, a secondlens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixthlens L6 and a seventh lens L7. An optical element such as an opticalfilter GF can be arranged between the seventh lens L7 and an image planeSi.

The first lens L1 is made of a glass material, the second lens L2 ismade of a plastic material, the third lens L3 is made of a plasticmaterial, the fourth lens L4 is made of a glass material, the fifth lensL5 is made of a plastic material, the sixth lens L6 is made of a plasticmaterial, and the seventh lens L7 is made of a plastic material.

Here, a focal length of the camera optical lens 10 is defined as f, anda focal length of the first lens L1 is defined as f1. The camera opticallens 10 should satisfy a condition of 1.51

f1/f

2.50, which specifies a ratio of the focal length f1 of the first lensL1 and the focal length f of the camera optical lens 10. If the lowerlimit of the specified value is exceeded, although it would facilitatedevelopment of ultra-thin lenses, the positive refractive power of thefirst lens L1 will be too strong, and thus it is difficult to correctthe problem like an aberration and it is also unfavorable fordevelopment of wide-angle lenses. On the contrary, if the upper limit ofthe specified value is exceeded, the positive refractive power of thefirst lens L1 would become too weak, and it is then difficult to developultra-thin lenses. Preferably, 1.53

f1/f

2.50.

A refractive index of the first lens L1 is defined as n1, where 1.70

n1

2.20, which specifies the refractive index of the first lens L1. Therefractive index within this range facilitates development of ultra-thinlenses, and also facilitates correction of the aberration. Preferably,1.73

n1

2.18.

A focal length of the third lens L3 is defined as f3, and a focal lengthof the fourth lens L4 is defined as f4. The camera optical lens 10should satisfy a condition of 1.00

f3/f4

2.00, which specifies a ratio of the focal length f3 of the third lensL3 and the focal length f4 of the fourth lens L4. This can effectivelyreduce the sensitivity of optical lens group used in the camera andfurther enhance the imaging quality.

A curvature radius of an object side surface of the seventh lens L7 isdefined as R13, and a curvature radius of an image side surface of theseventh lens L7 is defined as R14. The camera optical lens 10 furthersatisfies a condition of −10.00

(R13+R14)/(R13−R14)

10.00, which specifies a shape of the seventh lens L7. Out of thisrange, a development towards ultra-thin and wide-angle lenses would makeit difficult to correct the problem like an off-axis aberration.Preferably, −9.53

(R13+R14)/(R13−R14)

9.59.

A refractive index of the fourth lens L4 is defined as n4, where 1.70

n4

2.20, which specifies the refractive index of the fourth lens L4. Therefractive index within this range facilitates development of ultra-thinlenses, and also facilitates correction of the aberration. Preferably,1.73

n4

2.18.

A total optical length from an object side surface of the first lens L1to an image plane of the camera optical lens 10 along an optic axis isdefined as TTL. When the focal length of the camera optical lens, thefocal length of the first lens, the focal length of the third lens, thefocal length of the fourth lens, the refractive index of the first lens,the refractive index of the fourth lens, the curvature radius of theobject side surface of the seventh lens and the curvature radius of theimage side surface of the seventh lens satisfy the above conditions, andthe camera optical lens will have the advantage of high performance andsatisfy the design requirement of a low TTL.

In this embodiment, the object side surface of the first lens L1 isconvex in a paraxial region, an image side surface of the first lens L1is concave in the paraxial region, and the first lens L1 has a positiverefractive power.

A curvature radius of the object side surface of the first lens L1 isdefined as R1, and a curvature radius of the image side surface of thefirst lens L1 is defined as R2. The camera optical lens 10 furthersatisfies a condition of −10.29

(R1+R2)/(R1−R2)

−3.39. This can reasonably control a shape of the first lens L1 in sucha manner that the first lens L1 can effectively correct a sphericalaberration of the camera optical lens. Preferably, −6.43

(R1+R2)/(R1−R2)

−4.23.

An on-axis thickness of the first lens L1 is defined as d1. The cameraoptical lens 10 further satisfies a condition of 0.03

d1/TTL

0.10. This facilitates achieving ultra-thin lenses. Preferably, 0.04

d1/TTL

0.08.

In this embodiment, an object side surface of the second lens L2 isconvex in the paraxial region, an image side surface of the second lensL2 is concave in the paraxial region, and the second lens L2 has apositive refractive power.

The focal length of the camera optical lens 10 is f, and a focal lengthof the second lens L2 is f2. The camera optical lens 10 furthersatisfies a condition of 1.36

f2/f

11.31. By controlling the positive refractive power of the second lensL2 within the reasonable range, correction of the aberration of theoptical system can be facilitated. Preferably, 2.18

f2/f

9.05.

A curvature radius of the object side surface of the second lens L2 isdefined as R3, and a curvature radius of the image side surface of thesecond lens L2 is defined as R4. The camera optical lens 10 furthersatisfies a condition of −12.29

(R3+R4)/(R3−R4)

−1.72, which specifies a shape of the second lens L2. Out of this range,a development towards ultra-thin and wide-angle lenses would make itdifficult to correct the problem of the aberration. Preferably, −7.68

(R3+R4)/(R3−R4)

−2.15.

An on-axis thickness of the second lens L2 is defined as d3. The cameraoptical lens 10 further satisfies a condition of 0.04

d3/TTL

0.15. This facilitates achieving ultra-thin lenses. Preferably, 0.07

d3/TTL

0.12.

In this embodiment, an object side surface of the third lens L3 isconvex in the paraxial region, an image side surface of the third lensL3 is concave in the paraxial region, and the third lens L3 has anegative refractive power.

The focal length of the camera optical lens 10 is f, and a focal lengthof the third lens L3 is f3. The camera optical lens 10 further satisfiesa condition of −5.13

f3/f

−1.24. When the condition is satisfied, the field curvature of thesystem can be effectively balanced for further improving the imagequality. Preferably, −3.21

f3/f

−1.55.

A curvature radius of the object side surface of the third lens L3 isdefined as R5, and a curvature radius of the image side surface of thethird lens L3 is defined as R6. The camera optical lens 10 furthersatisfies a condition of 1.31

(R5+R6)/(R5−R6)

5.61. This can effectively control a shape of the third lens L3, therebyfacilitating shaping of the third lens L3 and avoiding bad shaping andgeneration of stress due to the overly large surface curvature of thethird lens L3. Preferably, 2.10

(R5+R6)/(R5−R6)

4.49.

An on-axis thickness of the third lens L3 is defined as d5. The cameraoptical lens 10 further satisfies a condition of 0.02

d5/TTL

0.05. This facilitates achieving ultra-thin lenses.

In this embodiment, an object side surface of the fourth lens L4 isconvex in the paraxial region, an image side surface of the fourth lensL4 is concave in the paraxial region, and the fourth lens L4 has anegative refractive power.

The focal length of the camera optical lens 10 is f, and a focal lengthof the fourth lens L4 is f4. The camera optical lens 10 furthersatisfies a condition of −3.98

f4/f

−0.86. The appropriate distribution of the refractive power leads to abetter imaging quality and a lower sensitivity. Preferably, −2.49

f4/f

−1.08.

A curvature radius of the object side surface of the fourth lens L4 isdefined as R7, and a curvature radius of the image side surface of thefourth lens L4 is defined as R8. The camera optical lens 10 furthersatisfies a condition of 0.82

(R7+R8)/(R7−R8)

3.49, which specifies a shape of the fourth lens L4. Out of this range,a development towards ultra-thin and wide-angle lenses would make itdifficult to correct the problem like an off-axis aberration.Preferably, 1.31

(R7+R8)/(R7−R8)

2.79.

An on-axis thickness of the fourth lens L4 is defined as d7. The cameraoptical lens 10 further satisfies a condition of 0.08

d7/TTL

0.37. This facilitates achieving ultra-thin lenses. Preferably, 0.12

d7/TTL

0.30.

In this embodiment, an object side surface of the fifth lens L5 isconvex in the paraxial region, an image side surface of the fifth lensL5 is concave in the paraxial region, and the fifth lens L5 has apositive refractive power.

The focal length of the camera optical lens 10 is f, and a focal lengthof the fifth lens L5 is f5. The camera optical lens 10 further satisfiesa condition of 0.54

f5/f

1.80. This can effectively make a light angle of the camera lens gentleand reduce the tolerance sensitivity. Preferably, 0.86

f5/f

1.44.

A curvature radius of the object side surface of the fifth lens L5 isdefined as R9, and a curvature radius of the image side surface of thefifth lens L5 is defined as R10. The camera optical lens 10 furthersatisfies a condition of −5.93

(R9+R10)/(R9−R10)

−1.56, which specifies a shape of the fifth lens L5. Out of this range,a development towards ultra-thin and wide-angle lenses would make itdifficult to correct the problem like an off-axis aberration.Preferably, −3.70

(R9+R10)/(R9−R10)

−1.95.

An on-axis thickness of the fifth lens L5 is defined as d9. The cameraoptical lens 10 further satisfies a condition of 0.04

d9/TTL

0.17. This facilitates achieving ultra-thin lenses. Preferably, 0.07

d9/TTL

0.14.

In this embodiment, an object side surface of the sixth lens L6 isconvex in the paraxial region, an image side surface of the sixth lensL6 is concave in the paraxial region, and the sixth lens L6 has apositive refractive power.

The focal length of the camera optical lens 10 is f, and a focal lengthof the sixth lens L6 is f6. The camera optical lens 10 further satisfiesa condition of 0.52

f6/f

2.42. The appropriate distribution of the refractive power leads to abetter imaging quality and a lower sensitivity. Preferably, 0.83

f6/f

1.94.

A curvature radius of the object side surface of the sixth lens L6 isdefined as R11, and a curvature radius of the image side surface of thesixth lens L6 is defined as R12. The camera optical lens 10 furthersatisfies a condition of −5.50

(R11+R12)/(R11−R12)

−1.62, which specifies a shape of the sixth lens L6. Out of this range,a development towards ultra-thin and wide-angle lenses would make itdifficult to correct the problem like an off-axis aberration.Preferably, −3.44

(R11+R12)/(R11−R12)

−2.02.

A thickness on-axis of the sixth lens L6 is defined as d11. The cameraoptical lens 10 further satisfies a condition of 0.03

d11/TTL

0.12. This facilitates achieving ultra-thin lenses. Preferably, 0.05

d11/TTL

0.10.

In this embodiment, the seventh lens L7 has a negative refractive power.

The focal length of the camera optical lens 10 is f, and a focal lengthof the seventh lens L7 is f7. The camera optical lens 10 furthersatisfies a condition of −12.29

f7/f

−2.52. The appropriate distribution of the refractive power leads to abetter imaging quality and a lower sensitivity. Preferably, −7.68

f7/f

−3.15.

An on-axis thickness of the seventh lens L7 is defined as d13. Thecamera optical lens 10 further satisfies a condition of 0.02

d13/TTL

0.11. This facilitates achieving ultra-thin lenses. Preferably, 0.03

d13/TTL

0.09.

In this embodiment, the total optical length TTL of the camera opticallens 10 is smaller than or equal to 7.60 mm, which is beneficial forachieving ultra-thin lenses. Preferably, the total optical length TTL ofthe camera optical lens 10 is smaller than or equal to 7.26 mm.

In this embodiment, an F number of the camera optical lens 10 is smallerthan or equal to 1.60. The camera optical lens 10 has a large F numberand a better imaging performance. Preferably, the F number of the cameraoptical lens 10 is smaller than or equal to 1.57.

With such design, the total optical length TTL of the camera opticallens 10 can be made as short as possible, and thus the miniaturizationcharacteristics can be maintained.

In the following, examples will be used to describe the camera opticallens 10 of the present disclosure. The symbols recorded in each examplewill be described as follows. The focal length, on-axis distance,curvature radius, on-axis thickness, inflexion point position, andarrest point position are all in units of mm.

TTL: Optical length (the total optical length from the object sidesurface of the first lens to the image plane of the camera optical lensalong the optic axis) in mm.

Preferably, inflexion points and/or arrest points can be arranged on theobject side surface and/or image side surface of the lens, so as tosatisfy the demand for the high quality imaging. The description belowcan be referred to for specific implementations.

The design information of the camera optical lens 10 in Embodiment 1 ofthe present disclosure is shown in Tables 1 and 2.

TABLE 1 R d nd vd S1 ∞  d0 = −0.287 R1 3.135  d1 = 0.413 nd1 1.7534 v144.94 R2 4.647  d2 = 0.078 R3 3.966  d3 = 0.558 nd2 1.5462 v2 55.82 R48.993  d4 = 0.235 R5 6.889  d5 = 0.228 nd3 1.6667 v3 20.53 R6 3.082  d6= 0.148 R7 15.575  d7 = 1.002 nd4 1.7534 v4 44.94 R8 4.146  d8 = 0.078R9 1.839  d9 = 0.578 nd5 1.5462 v5 55.82 R10 4.582 d10 = 0.249 R11 2.455d11 = 0.368 nd6 1.5462 v6 55.82 R12 5.902 d12 = 0.508 R13 1.360 d13 =0.485 nd7 1.5363 v7 55.69 R14 1.092 d14 = 0.535 R15 ∞ d15 = 0.210 ndg1.5168 vg 64.17 R16 ∞ d16 = 0.841

In the table, meanings of various symbols will be described as follows.

S1: aperture;

R: curvature radius of an optical surface, a central curvature radiusfor a lens;

R1: curvature radius of the object side surface of the first lens L1;

R2: curvature radius of the image side surface of the first lens L1;

R3: curvature radius of the object side surface of the second lens L2;

R4: curvature radius of the image side surface of the second lens L2;

R5: curvature radius of the object side surface of the third lens L3;

R6: curvature radius of the image side surface of the third lens L3;

R7: curvature radius of the object side surface of the fourth lens L4;

R8: curvature radius of the image side surface of the fourth lens L4;

R9: curvature radius of the object side surface of the fifth lens L5;

R10: curvature radius of the image side surface of the fifth lens L5;

R11: curvature radius of the object side surface of the sixth lens L6;

R12: curvature radius of the image side surface of the sixth lens L6;

R13: curvature radius of the object side surface of the seventh lens L7;

R14: curvature radius of the image side surface of the seventh lens L7;

R15: curvature radius of an object side surface of the optical filterGF;

R16: curvature radius of an image side surface of the optical filter GF;

d: on-axis thickness of a lens and an on-axis distance between lenses;

d0: on-axis distance from the aperture S1 to the object side surface ofthe first lens L1;

d1: on-axis thickness of the first lens L1;

d2: on-axis distance from the image side surface of the first lens L1 tothe object side surface of the second lens L2;

d3: on-axis thickness of the second lens L2;

d4: on-axis distance from the image side surface of the second lens L2to the object side surface of the third lens L3;

d5: on-axis thickness of the third lens L3;

d6: on-axis distance from the image side surface of the third lens L3 tothe object side surface of the fourth lens L4;

d7: on-axis thickness of the fourth lens L4;

d8: on-axis distance from the image side surface of the fourth lens L4to the object side surface of the fifth lens L5;

d9: on-axis thickness of the fifth lens L5;

d10: on-axis distance from the image side surface of the fifth lens L5to the object side surface of the sixth lens L6;

d11: on-axis thickness of the sixth lens L6;

d12: on-axis distance from the image side surface of the sixth lens L6to the object side surface of the seventh lens L7;

d13: on-axis thickness of the seventh lens L7;

d14: on-axis distance from the image side surface of the seventh lens L7to the object side surface of the optical filter GF;

d15: on-axis thickness of the optical filter GF;

d16: on-axis distance from the image side surface of the optical filterGF to the image plane;

nd: refractive index of d line;

nd1: refractive index of d line of the first lens L1;

nd2: refractive index of d line of the second lens L2;

nd3: refractive index of d line of the third lens L3;

nd4: refractive index of d line of the fourth lens L4;

nd5: refractive index of d line of the fifth lens L5;

nd6: refractive index of d line of the sixth lens L6;

nd7: refractive index of d line of the seventh lens L7;

ndg: refractive index of d line of the optical filter GF;

vd: abbe number;

v1: abbe number of the first lens L1;

v2: abbe number of the second lens L2;

v3: abbe number of the third lens L3;

v4: abbe number of the fourth lens L4;

v5: abbe number of the fifth lens L5;

v6: abbe number of the sixth lens L6;

v7: abbe number of the seventh lens L7;

vg: abbe number of the optical filter GF.

Table 2 shows aspherical surface data of the camera optical lens 10 inEmbodiment 1 of the present disclosure.

TABLE 2 Conic coefficient Aspherical surface coefficients k A4 A6 A8 A10A12 A14 A16 R1  4.7305E−01 −1.2648E−02 −1.8676E−04 −1.8477E−03 1.3325E−03 −6.2749E−04  1.9970E−04 −3.6087E−05 R2 −1.4317E+00−4.6014E−02  2.1518E−02 −1.1149E−02  6.4006E−03 −1.9380E−03  1.7961E−04−1.7709E−06 R3  4.3711E+00 −6.1618E−02  3.8484E−02 −2.6123E−02 1.6349E−02 −5.1663E−03  4.9232E−04  4.3518E−05 R4  2.8939E+01−1.3234E−02 −3.1941E−02  7.3264E−02 −9.9014E−02  7.5465E−02 −2.9606E−02 4.6832E−03 R5  2.0778E+01 −9.9841E−02  5.8277E−02 −1.5033E−01 1.8837E−01 −1.1738E−01  3.5713E−02 −4.3133E−03 R6  2.5662E+00−7.8197E−02  8.6046E−02 −1.8444E−01  1.8791E−01 −1.0232E−01  2.9084E−02−3.4372E−03 R7  2.6230E+01 −1.9327E−02  7.5043E−02 −1.0717E−01 6.5085E−02 −1.9299E−02  3.0081E−03 −2.4163E−04 R8 −2.4611E+02−9.2753E−02  7.7535E−02 −5.6058E−02  1.7524E−02 −7.7690E−04 −6.1038E−04 8.2468E−05 R9 −2.8461E+01 −3.5096E−02 −4.0147E−03  3.7271E−02−4.2373E−02  1.9254E−02 −3.8698E−03  2.7601E−04 R10  1.6356E−01−1.6111E−01  5.5847E−02  2.1709E−02 −3.2100E−02  1.3867E−02 −2.8033E−03 2.2798E−04 R11 −1.3948E+01  2.9648E−02 −1.3851E−01  1.0044E−01−3.9210E−02  9.2593E−03 −1.3365E−03  9.2698E−05 R12 −1.4610E+02 5.4229E−02 −1.1917E−01  7.5879E−02 −2.5207E−02  4.6983E−03 −4.6562E−04 1.8971E−05 R13 −2.4655E+00 −1.5378E−01  3.8947E−02 −4.0196E−03−1.2313E−04  8.3751E−05 −9.0125E−06  3.3895E−07 R14 −2.3618E+00−1.1027E−01  3.7238E−02 −8.0267E−03  1.1098E−03 −9.4688E−05  4.5228E−06−9.1804E−08

Here, K is a conic coefficient, and A4, A6, A8, A10, A12, A14 and A16are aspheric surface coefficients.

IH: Image Heighty=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2)]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰+A12x ¹² +A14x ¹⁴ +A16x ¹⁶  (1)

For convenience, an aspheric surface of each lens surface uses theaspheric surfaces shown in the above formula (1). However, the presentdisclosure is not limited to the aspherical polynomials form shown inthe formula (1).

Table 3 and Table 4 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 10 according toEmbodiment 1 of the present disclosure. P1R1 and P1R2 represent theobject side surface and the image side surface of the first lens L1,P2R1 and P2R2 represent the object side surface and the image sidesurface of the second lens L2, P3R1 and P3R2 represent the object sidesurface and the image side surface of the third lens L3, P4R1 and P4R2represent the object side surface and the image side surface of thefourth lens L4, P5R1 and P5R2 represent the object side surface and theimage side surface of the fifth lens L5, P6R1 and P6R2 represent theobject side surface and the image side surface of the sixth lens L6, andP7R1 and P7R2 represent the object side surface and the image sidesurface of the seventh lens L7. The data in the column named “inflexionpoint position” refers to vertical distances from inflexion pointsarranged on each lens surface to the optic axis of the camera opticallens 10. The data in the column named “arrest point position” refers tovertical distances from arrest points arranged on each lens surface tothe optic axis of the camera optical lens 10.

TABLE 3 Number of Inflexion Inflexion Inflexion Inflexion inflexionpoint point point point points position 1 position 2 position 3 position4 P1R1 0 0 0 0 0 P1R2 0 0 0 0 0 P2R1 0 0 0 0 0 P2R2 0 0 0 0 0 P3R1 10.665 0 0 0 P3R2 0 0 0 0 0 P4R1 0 0 0 0 0 P4R2 1 0.615 0 0 0 P5R1 11.155 0 0 0 P5R2 1 0.685 0 0 0 P6R1 1 1.035 0 0 0 P6R2 1 0.955 0 0 0P7R1 1 1.205 0 0 0 P7R2 1 2.015 0 0 0

TABLE 4 Number of Arrest Arrest Arrest arrest point point point pointsposition 1 position 2 position 3 P1R1 1 1.355 0 0 P1R2 1 1.325 0 0 P2R10 0 0 0 P2R2 2 0.815 1.025 0 P3R1 2 0.395 1.385 0 P3R2 3 0.755 1.3051.415 P4R1 3 0.835 1.175 1.495 P4R2 1 0.285 0 0 P5R1 1 0.525 0 0 P5R2 20.365 1.665 0 P6R1 2 0.585 1.875 0 P6R2 1 0.575 0 0 P7R1 2 0.595 1.915 0P7R2 2 0.735 2.885 0

FIG. 2 and FIG. 3 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 470 nm, 510 nm, 555 nm, 610 nm and650 nm after passing the camera optical lens 10 according toEmbodiment 1. FIG. 4 illustrates a field curvature and a distortion oflight with a wavelength of 555 nm after passing the camera optical lens10 according to Embodiment 1, in which a field curvature S is a fieldcurvature in a sagittal direction and T is a field curvature in atangential direction.

Table 13 shows various values of Embodiments 1, 2 and 3 and valuescorresponding to parameters which are specified in the above conditions.

As shown in Table 13, Embodiment 1 satisfies the above conditions.

In this embodiment, the entrance pupil diameter of the camera opticallens is 2.9646 mm. The image height of 1.0H is 3.9 mm. The FOV (field ofview) is 80.99°. Thus, the camera optical lens has a wide-angle and isultra-thin. Its on-axis and off-axis chromatic aberrations are fullycorrected, thereby achieving excellent optical characteristics.

Embodiment 2

Embodiment 2 is basically the same as Embodiment 1 and involves symbolshaving the same meanings as Embodiment 1, and only differencestherebetween will be described in the following.

Table 5 and Table 6 show design data of a camera optical lens 20 inEmbodiment 2 of the present disclosure.

TABLE 5 R d nd vd S1 ∞  d0 = −0.366 R1 3.116  d1 = 0.345 nd1 2.1541 v150.73 R2 4.644  d2 = 0.049 R3 5.988  d3 = 0.689 nd2 1.5462 v2 55.82 R48.740  d4 = 0.294 R5 6.599  d5 = 0.230 nd3 1.6667 v3 20.53 R6 3.195  d6= 0.107 R7 14.767  d7 = 1.699 nd4 2.1545 v4 50.73 R8 5.888  d8 = 0.030R9 1.801  d9 = 0.757 nd5 1.5462 v5 55.82 R10 3.636 d10 = 0.225 R11 1.749d11 = 0.523 nd6 1.5462 v6 55.82 R12 3.749 d12 = 0.902 R13 −1.383 d13 =0.294 nd7 1.5462 v7 55.69 R14 −1.727 d14 = 0.535 R15 ∞ d15 = 0.110 ndg1.5168 vg 64.17 R16 ∞ d16 = 0.075

Table 6 shows aspherical surface data of each lens of the camera opticallens 20 in Embodiment 2 of the present disclosure.

TABLE 6 Conic coefficient Aspherical surface coefficients k A4 A6 A8 A10A12 A14 A16 R1  1.2699E+00 −9.9451E−03 −3.4503E−04 −3.2684E−04 6.5698E−04 −6.7777E−04  3.0816E−04 −5.4017E−05 R2  2.0624E+00−1.3283E−02  1.7803E−02 −1.4443E−02  7.6632E−03 −1.5779E−03  7.3289E−05−1.5483E−05 R3  1.2244E+01 −5.6767E−03  2.5440E−02 −2.6161E−02 1.6794E−02 −4.8259E−03  6.0037E−04 −4.0710E−05 R4  2.8465E+01 7.5125E−03 −3.3856E−02  6.8044E−02 −9.6363E−02  7.5581E−02 −3.0079E−02 4.8551E−03 R5  2.0778E+01 −6.9959E−02  3.1171E−02 −1.4066E−01 1.8888E−01 −1.1816E−01  3.5889E−02 −4.2552E−03 R6  2.5662E+00−5.3204E−02  7.9082E−02 −1.9500E−01  1.8980E−01 −1.0049E−01  2.9293E−02−3.7232E−03 R7  2.6230E+01 −2.2539E−03  6.9786E−02 −1.0346E−01 6.4453E−02 −1.9675E−02  3.0327E−03 −2.1925E−04 R8 −2.4611E+02−1.0848E−01  9.1442E−02 −5.1626E−02  1.7051E−02 −1.2669E−03 −7.0084E−04 1.2384E−04 R9 −3.1872E+01 −1.1582E−01  1.6846E−02  4.4681E−02−4.1430E−02  1.8810E−02 −4.1851E−03  3.0160E-04 R10 −9.3828E−01−1.6191E−01  4.4695E−02  2.6150E−02 −3.0590E−02  1.3681E−02 −2.9462E−03 2.4579E−04 R11 −9.2297E+00 −8.1169E−03 −1.3290E−01  1.0272E−01−4.0038E−02  8.9564E−03 −1.3090E−03  1.1001E−04 R12 −3.7473E+01 2.6664E−02 −1.2097E−01  7.5931E−02 −2.5099E−02  4.7147E−03 −4.6470E−04 1.8513E−05 R13 −2.5105E+00 −1.2776E−01  4.3755E−02 −3.7277E−03−1.8809E−04  6.5407E−05 −1.0521E−05  8.1962E−07 R14 −5.9379E−01−1.5201E−02  3.1567E−02 −8.2723E−03  1.1056E−03 −9.1848E−05  4.9925E−06−3.1832E−08

Table 7 and Table 8 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 20 according toEmbodiment 2 of the present disclosure.

TABLE 7 Number of Inflexion Inflexion Inflexion Inflexion inflexionpoint point point point points position 1 position 2 position 3 position4 P1R1 0 0 0 0 0 P1R2 0 0 0 0 0 P2R1 0 0 0 0 0 P2R2 0 0 0 0 0 P3R1 10.735 0 0 0 P3R2 1 1.505 0 0 0 P4R1 0 0 0 0 0 P4R2 1 0.505 0 0 0 P5R1 10.795 0 0 0 P5R2 2 0.775 1.535 0 0 P6R1 1 0.975 0 0 0 P6R2 1 0.895 0 0 0P7R1 0 0 0 0 0 P7R2 0 0 0 0 0

TABLE 8 Number of Arrest Arrest Arrest Arrest arrest point point pointpoint points position 1 position 2 position 3 position 4 P1R1 0 0 0 0 0P1R2 1 1.485 0 0 0 P2R1 0 0 0 0 0 P2R2 0 0 0 0 0 P3R1 2 0.455 1.395 0 0P3R2 4 0.775 1.255 1.395 1.535 P4R1 1 1.515 0 0 0 P4R2 3 0.255 1.2151.465 0 P5R1 3 0.365 1.205 1.355 0 P5R2 2 0.405 1.235 0 0 P6R1 1 0.545 00 0 P6R2 2 0.535 1.875 0 0 P7R1 1 1.345 0 0 0 P7R2 3 1.345 1.695 2.355 0

FIG. 6 and FIG. 7 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 470 nm, 510 nm, 555 nm, 610 nm and650 nm after passing the camera optical lens 20 according to Embodiment2. FIG. 8 illustrates a field curvature and a distortion of light with awavelength of 555 nm after passing the camera optical lens 20 accordingto Embodiment 2.

As shown in Table 13, Embodiment 2 satisfies the above conditions.

In this embodiment, the entrance pupil diameter of the camera opticallens is 3.0656 mm. The image height of 1.0H is 3.6 mm. The FOV (field ofview) is 73.44°. Thus, the camera optical lens has a wide-angle and isultra-thin. Its on-axis and off-axis chromatic aberrations are fullycorrected, thereby achieving excellent optical characteristics.

Embodiment 3

Embodiment 3 is basically the same as Embodiment 1 and involves symbolshaving the same meanings as Embodiment 1, and only differencestherebetween will be described in the following.

Table 9 and Table 10 show design data of a camera optical lens 30 inEmbodiment 3 of the present disclosure.

TABLE 9 R d nd vd S1 ∞  d0 = −0.372 R1 3.120  d1 = 0.348 nd1 2.1541 v150.73 R2 4.643  d2 = 0.067 R3 6.036  d3 = 0.702 nd2 1.5462 v2 55.82 R48.382  d4 = 0.302 R5 5.684  d5 = 0.233 nd3 1.6667 v3 20.53 R6 3.285  d6= 0.104 R7 21.180  d7 = 1.709 nd4 2.1545 v4 50.73 R8 5.081  d8 = 0.022R9 1.657  d9 = 0.802 nd5 1.5462 v5 55.82 R10 3.414 d10 = 0.192 R11 1.602d11 = 0.561 nd6 1.5462 v6 55.82 R12 3.510 d12 = 0.860 R13 −1.380 d13 =0.288 nd7 1.5462 v7 55.69 R14 −1.725 d14 = 0.535 R15 ∞ d15 = 0.110 ndg1.5168 vg 64.17 R16 ∞ d16 = 0.075

Table 10 shows aspherical surface data of each lens of the cameraoptical lens 30 in Embodiment 3 of the present disclosure.

TABLE 10 Conic coefficient Aspherical surface coefficients k A4 A6 A8A10 A12 A14 A16 R1  1.3149E+00 −8.6842E−03 −3.4059E−04 −3.7935E−04 6.4962E−04 −6.7519E−04  3.0976E−04 −5.2762E−05 R2  2.0369E+00−1.3337E−02  1.7793E−02 −1.4427E−02  7.6736E−03 −1.5633E−03  7.7999E−05−1.4503E−05 R3  1.2329E+01 −8.4489E−03  2.5957E−02 −2.5898E−02 1.6876E−02 −4.8182E−03  5.9399E−04 −4.2687E−05 R4  2.9178E+01 6.3887E−03 −3.2371E−02  6.8486E−02 −9.6548E−02  7.5422E−02 −3.0110E−02 4.8837E−03 R5  1.2316E+01 −7.6467E−02  2.9537E−02 −1.4111E−01 1.8886E−01 −1.1810E−01  3.5916E−02 −4.2527E−03 R6  3.2070E+00−5.4246E−02  7.7460E−02 −1.9455E−01  1.9015E−01 −1.0037E−01  2.9318E−02−3.7158E−03 R7  9.8198E+01  1.7053E−04  7.0371E−02 −1.0336E−01 6.4484E−02 −1.9650E−02  3.0448E−03 −2.1853E−04 R8 −3.8590E+02−1.1279E−01  9.1704E−02 −5.1558E−02  1.7040E−02 −1.2908E−03 −7.1337E−04 1.1858E−04 R9 −3.1387E+01 −1.1732E−01  1.3471E−02  4.4492E−02−4.1147E−02  1.8917E−02 −4.1919E−03  2.6884E-04 R10 −3.2298E+00−1.6520E−01  4.5778E−02  2.6275E−02 −3.0629E−02  1.3660E−02 −2.9493E−03 2.4847E−04 R11 −7.5981E+00 −8.6048E−03 −1.3281E−01  1.0306E−01−4.0065E−02  8.9272E−03 −1.3172E−03  1.0776E−04 R12 −2.6443E+01 3.0175E−02 −1.2122E−01  7.5778E−02 −2.5117E−02  4.7150E−03 −4.6409E−04 1.8672E−05 R13 −2.7479E+00 −1.2615E−01  4.3635E−02 −3.7382E−03−1.8781E−04  6.5618E−05 −1.0492E−05  8.1671E−07 R14 −5.8820E−01−1.1127E−02  3.1521E−02 −8.3125E−03  1.1015E−03 −9.1699E−05  5.0955E−06−1.2603E−08

Table 11 and table 12 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 30 according toEmbodiment 3 of the present disclosure.

TABLE 11 Number of Inflexion Inflexion Inflexion Inflexion inflexionpoint point point point points position 1 position 2 position 3 position4 P1R1 0 0 0 0 0 P1R2 0 0 0 0 0 P2R1 0 0 0 0 0 P2R2 0 0 0 0 0 P3R1 10.765 0 0 0 P3R2 0 0 0 0 0 P4R1 0 0 0 0 0 P4R2 1 0.515 0 0 0 P5R1 10.785 0 0 0 P5R2 1 0.765 0 0 0 P6R1 1 1.015 0 0 0 P6R2 1 0.945 0 0 0P7R1 0 0 0 0 0 P7R2 0 0 0 0 0

TABLE 12 Number of Arrest Arrest Arrest Arrest arrest point point pointpoint points position 1 position 2 position 3 position 4 P1R1 0 0 0 0 0P1R2 0 0 0 0 0 P2R1 0 0 0 0 0 P2R2 0 0 0 0 0 P3R1 2 0.465 1.335 0 0 P3R24 0.745 1.185 1.495 1.525 P4R1 1 1.565 0 0 0 P4R2 1 0.255 0 0 0 P5R1 10.355 0 0 0 P5R2 2 0.405 1.265 0 0 P6R1 1 0.555 0 0 0 P6R2 2 0.565 1.8950 0 P7R1 1 1.325 0 0 0 P7R2 3 1.275 1.745 2.285 0

FIG. 10 and FIG. 11 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 470 nm, 510 nm, 555 nm, 610 nm and650 nm after passing the camera optical lens 30 according to Embodiment3. FIG. 12 illustrates field curvature and distortion of light with awavelength of 555 nm after passing the camera optical lens 30 accordingto Embodiment 3.

Table 13 in the following lists values corresponding to the respectiveconditions in this embodiment in order to satisfy the above conditions.The camera optical lens according to this embodiment satisfies the aboveconditions.

In this embodiment, the entrance pupil diameter of the camera opticallens is 3.0551 mm. The image height of 1.0H is 3.5 mm. The FOV (field ofview) is 72.04°. Thus, the camera optical lens has a wide-angle and isultra-thin. Its on-axis and off-axis chromatic aberrations are fullycorrected, thereby achieving excellent optical characteristics.

TABLE 13 Embodiment Embodiment Embodiment Parameters and conditions 1 23 f  4.595 4.752 4.735 f1 11.442 7.320 7.341 f2 12.498 31.995 35.712 f3−8.572 −9.548 −12.147 f4 −7.793 −9.452 −6.140 f5 5.236 5.703 5.077 f67.414 5.498 4.887 f7 −28.231 −18.264 −17.897  f12 6.088 5.896 6.012 FNO1.55 1.55 1.55 f1/f  2.49 1.54 1.55 f3/f4 1.10 1.01 1.98 (R13 +R14)/(R13 − R14) 9.15 −9.04 −9.00

It can be appreciated by one having ordinary skill in the art that thedescription above is only embodiments of the present disclosure. Inpractice, one having ordinary skill in the art can make variousmodifications to these embodiments in forms and details withoutdeparting from the spirit and scope of the present disclosure.

What is claimed is:
 1. A camera optical lens, comprising, from an objectside to an image side in sequence: a first lens, a second lens, a thirdlens, a fourth lens, a fifth lens, a sixth lens and a seventh lens,wherein the camera optical lens satisfies following conditions: 1.51

f1/f

2.50; 1.70

n1

2.20; 1.00

f3/f4

2.00; −10.00

(R13+R14)/(R13−R14)

10.00; and 1.70

n4

2.20, where f denotes a focal length of the camera optical lens; f1denotes a focal length of the first lens; f3 denotes a focal length ofthe third lens; f4 denotes a focal length of the fourth lens; n1 denotesa refractive index of the first lens; n4 denotes a refractive index ofthe fourth lens; R13 denotes a curvature radius of an object sidesurface of the seventh lens; and R14 denotes a curvature radius of animage side surface of the seventh lens.
 2. The camera optical lens asdescribed in claim 1, wherein the first lens is made of glass material,the second lens is made of plastic material, the third lens is made ofplastic material, the fourth lens is made of glass material, the fifthlens is made of plastic material, the sixth lens is made of plasticmaterial and the seventh lens made of a plastic material.
 3. The cameraoptical lens as described in claim 1, further satisfying followingconditions: 1.53

f1/f

2.50; 1.73

n1

2.18; −9.53

(R13+R14)/(R13−R14)

9.59; and 1.73

n4

2.18.
 4. The camera optical lens as described in claim 1, wherein thefirst lens has a positive refractive power, and comprises an object sidesurface being convex in a paraxial region and an image side surfacebeing concave in the paraxial region, and the camera optical lensfurther satisfies following conditions: −10.29

(R1+R2)/(R1−R2)

−3.39; and 0.03

d1/TTL

0.10, where R1 denotes a curvature radius of the object side surface ofthe first lens; R2 denotes a curvature radius of the image side surfaceof the first lens; d1 denotes an on-axis thickness of the first lens;and TTL denotes a total optical length from the object side surface ofthe first lens to an image plane of the camera optical lens along anoptic axis.
 5. The camera optical lens as described in claim 4, furthersatisfying following conditions: −6.43

(R1+R2)/(R1−R2)

−4.23; and 0.04

d1/TTL

0.08.
 6. The camera optical lens as described in claim 1, wherein thesecond lens has a positive refractive power, and comprises an objectside surface being convex in a paraxial region and an image side surfacebeing concave in the paraxial region, and the camera optical lensfurther satisfies following conditions: 1.36

f2/f

11.31; −12.29

(R3+R4)/(R3−R4)

−1.72; and 0.04

d3/TTL

0.15, where f2 denotes a focal length of the second lens; R3 denotes acurvature radius of the object side surface of the second lens; R4denotes a curvature radius of the image side surface of the second lens;d3 denotes an on-axis thickness of the second lens; and TTL denotes atotal optical length from an object side surface of the first lens to animage plane of the camera optical lens along an optic axis.
 7. Thecamera optical lens as described in claim 6, further satisfyingfollowing conditions: 2.18

f2/f

9.05; −7.68

(R3+R4)/(R3−R4)

−2.15; and 0.07

d3/TTL

0.12.
 8. The camera optical lens as described in claim 1, wherein thethird lens has a negative refractive power, and comprises an object sidesurface being convex in a paraxial region and an image side surfacebeing concave in the paraxial region, and the camera optical lensfurther satisfies following conditions: −5.13

f3/f

−1.24; 1.31

(R5+R6)/(R5−R6)

5.61; and 0.02

d5/TTL

0.05, where R5 denotes a curvature radius of the object side surface ofthe third lens; R6 denotes a curvature radius of the image side surfaceof the third lens; d5 denotes an on-axis thickness of the third lens;and TTL denotes a total optical length from an object side surface ofthe first lens to an image plane of the camera optical lens along anoptic axis.
 9. The camera optical lens as described in claim 8, furthersatisfying following conditions: −3.21

f3/f

−1.55; and 2.10

(R5+R6)/(R5−R6)

4.49.
 10. The camera optical lens as described in claim 1, wherein thefourth lens has a negative refractive power, and comprises an objectside surface being convex in a paraxial region and an image side surfacebeing concave in the paraxial region, and the camera optical lensfurther satisfies following conditions: −3.98

f4/f

−0.86; 0.82

(R7+R8)/(R7−R8)

3.49; and 0.08

d7/TTL

0.37, where R7 denotes a curvature radius of the object side surface ofthe fourth lens; R8 denotes a curvature radius of the image side surfaceof the fourth lens; d7 denotes an on-axis thickness of the fourth lens;and TTL denotes a total optical length from an object side surface ofthe first lens to an image plane of the camera optical lens along anoptic axis.
 11. The camera optical lens as described in claim 10,further satisfying following conditions: −2.49

f4/f

−1.08; 1.31

(R7+R8)/(R7−R8)

2.79; and 0.12

d7/TTL

0.30.
 12. The camera optical lens as described in claim 1, wherein thefifth lens has a positive refractive power, and comprises an object sidesurface being convex in a paraxial region and an image side surfacebeing concave in the paraxial region, and the camera optical lensfurther satisfies following conditions: 0.54

f5/f

1.80; −5.93

(R9+R10)/(R9−R10)

−1.56; and 0.04

d9/TTL

0.17, where f5 denotes a focal length of the fifth lens; R9 denotes acurvature radius of the object side surface of the fifth lens; R10denotes a curvature radius of the image side surface of the fifth lens;and d9 denotes an on-axis thickness of the fifth lens; and TTL denotes atotal optical length from an object side surface of the first lens to animage plane of the camera optical lens along an optic axis.
 13. Thecamera optical lens as described in claim 12, further satisfyingfollowing conditions: 0.86

f5/f

1.44; −3.70

(R9+R10)/(R9−R10)

−1.95; and 0.07

d9/TTL

0.14.
 14. The camera optical lens as described in claim 1, wherein thesixth lens has a positive refractive power, and comprises an object sidesurface being convex in a paraxial region and an image side surfacebeing concave in the paraxial region, and the camera optical lensfurther satisfies following conditions: 0.52

f6/f

2.42; −5.50

(R11+R12)/(R11−R12)

−1.62; and 0.03

d11/TTL

0.12, where f6 denotes a focal length of the sixth lens; R11 denotes acurvature radius of the object side surface of the sixth lens; R12denotes a curvature radius of the image side surface of the sixth lens;d11 denotes an on-axis thickness of the sixth lens; and TTL denotes atotal optical length from an object side surface of the first lens to animage plane of the camera optical lens along an optic axis.
 15. Thecamera optical lens as described in claim 14, further satisfyingfollowing conditions: 0.83

f6/f

1.94; −3.44

(R11+R12)/(R11−R12)

−2.02; and 0.05

d11/TTL

0.10.
 16. The camera optical lens as described in claim 1, wherein theseventh lens has a negative refractive power, and the camera opticallens further satisfies following conditions: −12.29

f7/f

−2.52; and 0.02

d13/TTL

0.11, where f7 denotes a focal length of the seventh lens; d13 denotesan on-axis thickness of the seventh lens; and TTL denotes a totaloptical length from an object side surface of the first lens to an imageplane of the camera optical lens along an optic axis.
 17. The cameraoptical lens as described in claim 16, further satisfying followingconditions: −7.68

f7/f

−3.15; and 0.03

d13/TTL

0.09.
 18. The camera optical lens as described in claim 1, wherein atotal optical length TTL from an object side surface of the first lensto an image plane of the camera optical lens along an optic axis issmaller than or equal to 7.60 mm.
 19. The camera optical lens asdescribed in claim 18, wherein the total optical length TTL of thecamera optical lens is smaller than or equal to 7.26 mm.
 20. The cameraoptical lens as described in claim 1, wherein an F number of the cameraoptical lens is smaller than or equal to 1.60.